| Optical Waveguide Formed in Yb：KLu（WO4）2 Crystal by 6.0 MeV O^＋ Implantation |
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| 作者姓名： | 姜毅 王克明 王雪林 贾传磊 张建秀 王继扬 马宏骥 聂瑞 沈定予 |
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| 作者单位： | [1]School of Physics and Microelectronics, Shandong Univcrsity, Jinan 250100 [2]State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100 [3]Key Laboratory of Heavy Ion Physics （Ministry of Education）, Peking University, Beijing 100871 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10475052. |
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| 摘 要： | A planar optical waveguide is formed in monoclinic double rare-earth-tungstate laser crystal Yb：KLu（WO4）2 by 6.0 Me V oxygen ion implantation with a dose of 2 × 10^16 ions/cm^2 at room temperature. Subsequently, annealing at 300℃ for an hour in air is performed on the sample to decrease colour centres to improve the thermal stability of the waveguide. The refractive index profiles of the waveguide are reconstructed by an effective refractive index method. Dark modes of the waveguide are observed at wavelengths of 633 nm and 1539 nm. TRIM＇98 is used to simulate the damage profile caused by the implantation process. It is found that the refractive index change may be mainly due to the damage induced by the nuclear energy loss.
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| 关 键 词： | 光波导 Yb：KLu（WO4）2晶体 单斜晶系 激光器 |
| 收稿时间： | 2005-10-25 |
| 修稿时间： | 2005-10-25 |
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